The protagonist Xu Che is an "intelligence businessman" without any official background and not affiliated with any camp. His golden finger is a special kind of information perception - he has a magnet-like sense of "transaction demands" and can accurately infer through observation and idioms what transactions a person or organization most wants to complete at this time and is most afraid of failure. He does not engage in assassinations or instigating rebellion. What he does is act as a middleman in the most invisible places in war - black market transactions, arms reselling, intelligence trading, and identity replacement. All the forces knew of his existence and hated him to the core, but they could not live without him. He is like an intelligence broker walking on a knife's edge, taking advantage of the contradictions between the parties, grabbing power in the cracks, and using this to balance the entire war situation.
